This change fixes an issue we're seeing where host entries, missing a
hostname and ip, are being reconstructed for checkin. While that shouldn't
be an issue during checkin, it would be if used for other purposes.

With that in mind, this adds a check to see if the host is being
reconstructed. If so, then it will just debug log instead of raising an
error.

Some inventory syncs take a long time to complete.
This change adds in a progress bar so users know there is actual
progress and have an estimated completion time.

We're seeing some strang behavior in CI. These are attempts to solve them
and/or get more information about what's going on.